The iPod is designed and marketed by Apple Inc., first released on November 10, 2001. It is a portable media player with four current versions, iPod Shuffle, iPod Nano, iPod Touch, and the iPod Classic. It not only can play music, it also can be used as an external data storage device. Depending on the model, storage ranges from 2 GB for the iPod Shuffle up to 160 GB for the iPod classic, all the devices use Samsung, ARM and the Apple A5 CPUs.
Files can be transferred from computers using...

A personal computer, or PC, refers to any general-purpose computer whose size, capabilities, and selling price make it useful for individuals, and is intended to be managed directly by a user with no superseding operator. Examples of personal computers include desktop computers, laptops, tablet PCs, and handheld PCs. Most commonly, PCs are used in a home or office setting.
Historically, the first computer demo was developed in 1968 by Douglas Englebart. It gave society a preview of what...

A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.